World's Best Scientists 2026 revealed!
Award Badge
Computer Science
Greece
2026

D-Index & Metrics

Computer Science

D-Index
66
Citations
19905
World Ranking
2298
National Ranking
8

Timos Sellis publication distribution in Computer Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Computer Science in 2026. The highlighted bar marks where Timos Sellis sits on this spectrum.

32–41 publications: 7 scientists 42–51 publications: 22 scientists 52–61 publications: 82 scientists 62–71 publications: 134 scientists 72–81 publications: 249 scientists 82–91 publications: 324 scientists 92–101 publications: 421 scientists 102–111 publications: 420 scientists 112–121 publications: 497 scientists 122–131 publications: 544 scientists 132–141 publications: 555 scientists 142–151 publications: 609 scientists 152–161 publications: 559 scientists 162–171 publications: 534 scientists 172–181 publications: 556 scientists 182–191 publications: 583 scientists 192–201 publications: 519 scientists 202–211 publications: 508 scientists 212–221 publications: 490 scientists 222–231 publications: 437 scientists 232–241 publications: 423 scientists 242–251 publications: 408 scientists 252–261 publications: 377 scientists 262–271 publications: 301 scientists 272–281 publications: 335 scientists 282–291 publications: 320 scientists 292–301 publications: 293 scientists 302–311 publications: 250 scientists 312–321 publications: 238 scientists 322–331 publications: 206 scientists 332–341 publications: 209 scientists 342–351 publications: 208 scientists 352–361 publications: 162 scientists 362–371 publications: 176 scientists 372–381 publications: 127 scientists 382–391 publications: 158 scientists 392–401 publications: 128 scientists 402–411 publications: 104 scientists 412–421 publications: 94 scientists 422–431 publications: 99 scientists 432–441 publications: 83 scientists 442–451 publications: 108 scientists 452–461 publications: 73 scientists 462–471 publications: 77 scientists 472–481 publications: 69 scientists 482–491 publications: 84 scientists 492–501 publications: 62 scientists 502–511 publications: 54 scientists 512–521 publications: 57 scientists 522–531 publications: 51 scientists 532–541 publications: 51 scientists 542–551 publications: 32 scientists 552–561 publications: 38 scientists 562–571 publications: 28 scientists 572–581 publications: 43 scientists 582–591 publications: 33 scientists 592–601 publications: 41 scientists 602–611 publications: 32 scientists 612–621 publications: 28 scientists 622–631 publications: 25 scientists 632–641 publications: 27 scientists 642–651 publications: 17 scientists 652–661 publications: 20 scientists 662–671 publications: 17 scientists 672–681 publications: 15 scientists 682–691 publications: 14 scientists 692–701 publications: 21 scientists 702–711 publications: 13 scientists 712–721 publications: 12 scientists 722–731 publications: 19 scientists 732–741 publications: 14 scientists 742–751 publications: 12 scientists 752–761 publications: 10 scientists 762–771 publications: 10 scientists 772–781 publications: 11 scientists 782–791 publications: 10 scientists 792–801 publications: 11 scientists 802–811 publications: 8 scientists 812–821 publications: 8 scientists 822–831 publications: 7 scientists 832–841 publications: 11 scientists 842–851 publications: 10 scientists 852–861 publications: 5 scientists 862–871 publications: 9 scientists 872–881 publications: 4 scientists 882–891 publications: 6 scientists 892–901 publications: 3 scientists 902–911 publications: 6 scientists 912–921 publications: 3 scientists 922–931 publications: 2 scientists 932–941 publications: 2 scientists 942–951 publications: 2 scientists 952–961 publications: 3 scientists 962–971 publications: 3 scientists 972–981 publications: 3 scientists 982–990 publications: 5 scientists 991+ publications: 100 scientists
32 publications 991+

This scientist: 410 publications — 88th percentile

88% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 991 publications or more.

Timos Sellis D-index placement in Computer Science in 2026

The chart shows the D-index (discipline H-index) distribution of Computer Science scientists ranked by Research.com in 2026. The highlighted bar marks where Timos Sellis sits on this spectrum.

30–31 D-Index: 879 scientists 32–33 D-Index: 983 scientists 34–35 D-Index: 918 scientists 36–37 D-Index: 990 scientists 38–39 D-Index: 968 scientists 40–41 D-Index: 907 scientists 42–43 D-Index: 821 scientists 44–45 D-Index: 763 scientists 46–47 D-Index: 689 scientists 48–49 D-Index: 543 scientists 50–51 D-Index: 543 scientists 52–53 D-Index: 518 scientists 54–55 D-Index: 500 scientists 56–57 D-Index: 458 scientists 58–59 D-Index: 400 scientists 60–61 D-Index: 337 scientists 62–63 D-Index: 308 scientists 64–65 D-Index: 292 scientists 66–67 D-Index: 249 scientists 68–69 D-Index: 213 scientists 70–71 D-Index: 192 scientists 72–73 D-Index: 189 scientists 74–75 D-Index: 165 scientists 76–77 D-Index: 139 scientists 78–79 D-Index: 119 scientists 80–81 D-Index: 121 scientists 82–83 D-Index: 113 scientists 84–85 D-Index: 88 scientists 86–87 D-Index: 87 scientists 88–89 D-Index: 75 scientists 90–91 D-Index: 69 scientists 92–93 D-Index: 57 scientists 94–95 D-Index: 46 scientists 96–97 D-Index: 38 scientists 98–99 D-Index: 34 scientists 100–101 D-Index: 36 scientists 102–103 D-Index: 27 scientists 104–105 D-Index: 37 scientists 106–107 D-Index: 18 scientists 108–109 D-Index: 31 scientists 110–111 D-Index: 19 scientists 112–113 D-Index: 16 scientists 114–115 D-Index: 12 scientists 116–117 D-Index: 20 scientists 118–119 D-Index: 15 scientists 120–121 D-Index: 5 scientists 122–123 D-Index: 20 scientists 124–125 D-Index: 8 scientists 126–127 D-Index: 5 scientists 128–129 D-Index: 7 scientists 130 D-Index: 3 scientists 131+ D-Index: 98 scientists
30 D-Index 131+

This scientist: 66 D-Index — 84th percentile

84% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 131 D-Index or more.

Research.com Recognitions

  • 2026 - Research.com Computer Science in Greece Leader Award
  • 2025 - Research.com Computer Science in Greece Leader Award
  • 2022 - Research.com Computer Science in Greece Leader Award
  • 2013 - ACM Fellow For contributions to database query optimization, spatial data management, and data warehousing.
  • 2010 - IEEE Fellow For contributions to database query optimization, and spatial data management
  • 2008 - ACM Senior Member

Overview

Timos Sellis is affiliated with the Athena Research Center in Greece and has a research focus primarily in the field of Computer Science. Their work spans several subfields, including Artificial Intelligence, Statistical and Nonlinear Physics, Information Systems, Signal Processing, and Transportation. The scientist's research topics detail a concentration on Complex Network Analysis Techniques, Human Mobility and Location-Based Analysis, Advanced Text Analysis Techniques, Data Management and Algorithms, Opinion Dynamics and Social Influence, Data Quality and Management, and Sentiment Analysis and Opinion Mining.

The scientist has contributed frequently to specific publication venues such as:

  • IEEE Transactions on Knowledge and Data Engineering
  • arXiv (Cornell University)
  • Information Systems
  • Expert Systems with Applications
  • The VLDB Journal

Recent representative publications by Timos Sellis include:

  • "Community-diversified influence maximization in social networks," 2020, Information Systems
  • "Target-aware Holistic Influence Maximization in Spatial Social Networks," 2020, IEEE Transactions on Knowledge and Data Engineering
  • "Big data analytics in healthcare A systematic literature review and roadmap for practical implementation," 2021, IEEE/CAA Journal of Automatica Sinica
  • "Location-Centered House Price Prediction: A Multi-Task Learning Approach," 2022, ACM Transactions on Intelligent Systems and Technology
  • "Event Popularity Prediction Using Influential Hashtags From Social Media," 2020, IEEE Transactions on Knowledge and Data Engineering

The scientist collaborates frequently with a number of coauthors, including:

  • Yong-Bin Kang
  • Mohammed Eunus Ali
  • Jianxin Li
  • Xiangmin Zhou
  • Lei Chen

Timos Sellis holds distinctions such as the ACM Fellow award received in 2013 for contributions to database query optimization, spatial data management, and data warehousing. They were also named IEEE Fellow in 2010 for work related to database query optimization and spatial data management. Additionally, the ACM Senior Member title was awarded in 2008.

Best Publications

  • The R+-Tree: A Dynamic Index for Multi-Dimensional Objects

    Timos K. Sellis;Nick Roussopoulos;Christos Faloutsos

  • Multiple-query optimization

    Timos K. Sellis

  • DIANA-microT web server: elucidating microRNA functions through target prediction

    Manolis Maragkakis;Martin Reczko;Victor A. Simossis;Panagiotis Alexiou

  • Spatio-temporal indexing for large multimedia applications

    Y. Theoderidis;M. Vazirgiannis;T. Sellis

  • A survey of logical models for OLAP databases

    Panos Vassiliadis;Timos Sellis

  • Accurate microRNA target prediction correlates with protein repression levels

    Manolis Maragkakis;Manolis Maragkakis;Panagiotis Alexiou;Panagiotis Alexiou;Giorgos L. Papadopoulos;Martin Reczko

  • Topological relations in the world of minimum bounding rectangles: a study with R-trees

    Dimitris Papadias;Timos Sellis;Yannis Theodoridis;Max J. Egenhofer

  • A model for the prediction of R-tree performance

    Yannis Theodoridis;Timos Sellis

  • Proceedings of the 24th ACM International on Conference on Information and Knowledge Management

    James Bailey;Alistair Moffat;Charu C. Aggarwal;Maarten de Rijke

  • An efficient pictorial database system for PSQL

    N. Roussopoulos;C. Faloutsos;T. Sellis

  • Data Warehouse Configuration

    Dimitri Theodoratos;Timos K. Sellis

  • Optimizing ETL processes in data warehouses

    A. Simitsis;P. Vassiliadis;T. Sellis

  • A methodology for clustering XML documents by structure

    Theodore Dalamagas;Tao Cheng;Klaas-Jan Winkel;Timos Sellis

  • Parametric query optimization

    Yannis E. Ioannidis;Raymond T. Ng;Kyuseok Shim;Timos K. Sellis

  • Sampling Trajectory Streams with Spatiotemporal Criteria

    M. Potamias;K. Patroumpas;T. Sellis

  • Qualitative representation of spatial knowledge in two-dimensional space

    Dimitris Papadias;Timos Sellis

  • Analysis of object oriented spatial access methods

    Christos Faloutsos;Timos Sellis;Nick Roussopoulos

  • The Lowell database research self-assessment

    Serge Abiteboul;Rakesh Agrawal;Phil Bernstein;Mike Carey

  • Specifications for efficient indexing in spatiotemporal databases

    Y. Theodoridis;T. Sellis;A.N. Papadopoulos;Y. Manolopoulos

  • Community-diversified influence maximization in social networks

    Jianxin Li;Taotao Cai;Ke Deng;Xinjue Wang

  • Efficient cost models for spatial queries using R-trees

    Y. Theodoridis;E. Stefanakis;T. Sellis

Frequent Co-Authors

Nick Roussopoulos
Nick Roussopoulos University of Maryland, College Park
Christos Faloutsos
Christos Faloutsos Carnegie Mellon University
Yannis Theodoridis
Yannis Theodoridis University of Piraeus
Alkis Simitsis
Alkis Simitsis Micro Focus (United States)
Panos Vassiliadis
Panos Vassiliadis University of Ioannina
Zhifeng Bao
Zhifeng Bao RMIT University
Michalis Vazirgiannis
Michalis Vazirgiannis École Polytechnique
Dimitris Papadias
Dimitris Papadias Hong Kong University of Science and Technology
Yannis E. Ioannidis
Yannis E. Ioannidis National and Kapodistrian University of Athens

If you think any of the details on this page are incorrect, let us know.

Report an issue

We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below:

Related Online Degrees & Career Pathways

Online education offers a wide variety of pathways for aspiring computer science professionals. Some of the famous online colleges in the USA are known for their flexible programs, which provide high-quality learning experiences and accreditation.

If you’re interested in tech-driven industries, consider specialized online degrees. For example, those fascinated by gaming and interactive media can explore online game design programs to develop both technical and creative skills.

Students aiming for roles in cybersecurity—a field with rapidly growing demand—can benefit from online cybersecurity degree programs, which cover essential areas like network defense and ethical hacking.

Additionally, those interested in technology’s application within the construction sector can look into construction management degree cost options to manage building projects efficiently with cutting-edge digital tools.

By exploring these related programs, students can discover diverse career pathways and tailor their education toward in-demand skills across multiple industries.

Best Scientists Citing Timos Sellis

Trending Scientists

Recently Published Articles